"If she expresses any curiosity, in future conversations with you, about the effect of the medicine, check her at once.

Keep her as ignorant of it as she is now!" "Why ?" "Why! If she knows what you know, how will she feel?
Shocked and horrified, as you felt.

What will she do?
She will come straight here, and try, as you have tried, to persuade me to give it up.

Is that true or not ?" (Impossible to deny that it was true.) "I am so fond of her," he went on, "that I can refuse her nothing.

She would end in making me give it up.